I can't answer for Tohu, but in general, it has much to do with displays, beginning with LCD.
The present ado about transparent conductors must be connected with touch screens and Windows 8.
Other uses: glass and mirrors that opacify electrically at strong light, especially welding helmets and car mirrors, plus protection against blinding lasers for helicopter pilots, in the future house windows.
From time to time, antistatic coating. Shipping bags for electronic components and cards...
Though, in nearly all uses, a very fine mesh of metal electrodes replaces a film. Surface conduction makes the last few µm. Easier.